Senior Software Development Engineer, Full Stack

About the role

Join our Technology Team as a Senior Software Engineer (Full-stack) to focus on the Identity web and mobile app experience. Your responsibilities include designing, implementing, and maintaining robust, secure, and scalable services and applications, building scalable web UI architectures, and collaborating with product, design, and partner engineering teams.

Responsibilities

• Design, implement, and maintain robust, secure, and scalable services and applications, including low-level system design (LLD), API design, and data modeling.
• Build scalable, reusable, and component-driven web UI architectures using modern frameworks (React, Node.js, JavaScript/TypeScript), integrating seamlessly with GraphQL APIs.
• Design, evolve, and maintain GraphQL schemas, and consume those schemas across web and mobile clients to support login, profile, and account experiences.
• Write clean, reliable, and well-tested code using sound engineering principles, design patterns, and rigorous code review practices.
• Own end-to-end delivery of features and services, from technical design through deployment, monitoring, and iteration, ensuring high availability and operational excellence.
• Diagnose and resolve complex production issues, perform root-cause analysis, and drive long-term improvements in reliability, observability, and resilience.
• Collaborate closely with product, design, and partner engineering teams, contributing to discovery, backlog prioritization, and data-driven decisions while ensuring solutions are reusable across domains.
• Apply AI-enabled tools and workflows responsibly to improve development efficiency, reliability, and engineering outcomes.

Requirements

• Bachelor’s degree in Computer Science or a related technical field, or equivalent professional experience.
• 10+ years of professional software engineering experience.
• Experience building and operating production services or applications, with clear ownership of features or systems.
• Proficiency in at least one modern programming language and strong fundamentals in data structures, algorithms, system design, and problem solving.
• Strong experience with GraphQL, including schema design, evolution, and client consumption.
• Experience owning the full software development lifecycle, including design, implementation, code reviews, testing, deployment, and monitoring.
• Full-stack experience using JavaScript, TypeScript, React, Java or Kotlin, and GraphQL.
• Experience maintaining production systems, including debugging, monitoring, and operational support.
• Experience designing APIs and building user-facing applications consumed across teams or business units.
• Understanding of testing, observability, and monitoring tools (e.g., unit/integration testing frameworks, logging, metrics, alerting).
• Familiarity with AI-assisted development tools and workflows.

Qualifications

• Ability to evaluate and select technologies while understanding trade-offs between platforms and architectures.
• Experience working on consumer facing e-commerce applications within Identity and Access Management domain.
• Developing mobile and cross-platform identity experiences (web plus native apps) like deep linking, cross-device login, SSO, and account linking.
• Experience integrating and operating AI- or ML-enabled solutions in the product or development lifecycle (for example, AI-assisted testing, content, or personalization) with appropriate safeguards.
• Experience leading technical direction, and driving architecture decisions for distributed systems at scale.
• Deep understanding of app architecture patterns.
• Track record of improving operational excellence through observability, performance optimization, and resilient design for high-traffic, customer-facing applications.

Benefits and Perks

• Medical, dental, and vision coverage
• Paid time off
• Employee Assistance Program
• Wellness and travel reimbursement
• Travel discounts
• IATAN membership

Pay

The total cash range for this position in Seattle is $184,500.00 to $258,000.00. Employees in this role have the potential to increase their pay up to $295,000.00, which is the top of the range, based on ongoing, demonstrated, and sustained performance in the role.

Application Instructions

Our email domain is @expediagroup.com. The official place to find and apply for roles is here. For accommodation requests, please visit this link.